Book/Report

FZJ-2018-04213

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Dreidimensionale mathematische Modellierung des stationären und instationären Verhaltens oxidkeramischer Hochtemperatur-Brennstoffzellen

Rechenauer, C. (Corresponding author)FZJ* ; Achenbach, E.FZJ*

1993
Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag Jülich

Please use a persistent id in citations: http://hdl.handle.net/2128/19338

Report No.: Juel-2752

Abstract: For Solid Oxide Fuel Cells a mathematical model is developed. The characteristic quantities and the three-dimensional temperature, concentration and current densitydistributions across a stack can be calculated for steady and unsteady state conditions. The model bases an the flat plate concept in cross-, counter- or co-flow. As a fuel a mixture of H$_{2}$, H$_{2}$O, CO, CO$_{2}$ and CH$_{4}$ can be applied. The model accounts for the internal methane-steam reforrning reaction at the anode. In the energy balances the heat conduction, the convective heat transfer and also the heat transfer via radiation are considered by evaluating an efTective heat conductivity. The heat exchange between the stack walls and the surroundings via radiation and convection is also accounted for. The influence of different operation conditions is analyzed by a parameter study. The dynamic behaviour of the fuel cell is simulated for the heating-up procedure, the starting-up procedure and for load changes. Finally the effect of the the anode gas feed-back is investigated and an example is presented for a co-generation plant with a Solid Oxide Fuel Cell.

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Contributing Institute(s):

1. Publikationen vor 2000 (PRE-2000)

Research Program(s):

1. 899 - ohne Topic (POF3-899) (POF3-899)

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